How to make Butterfly bushes thrive?
I have two butterfly bushes that both began from a 2 gallon container. One is a black knight and the other is royal red. I bought the black night two summers ago and it has come back every year, but I still have a mere 4 twigs and hardly any blooms. The same is true for the royal red that I planted last year. They still come back and bloom, but it's just a sad sad sight. There is definitely enough sun, what am I missing :(